Who issues NPDES permits in New Jersey?

New Jersey Department of Environmental Protection issues and enforces NPDES permits for wastewater discharges in New Jersey. Klarifi tracks 122 permits held by publicly owned treatment plants in the state.

How many NPDES permits in New Jersey are expired or administratively continued?

23 permits are administratively continued (the plant applied for renewal and the old permit stays in force) and 16 are recorded as expired, out of 122 permits tracked. 83 are effective.

How many New Jersey wastewater permits come up for renewal soon?

20 in 2026, 33 in 2027 and 10 in 2028. Each year has its own renewal calendar with the plants listed.

How do I look up an NPDES permit number?

Enter the permit number (two letters and seven characters, for example TX0021873) or the plant name in the lookup on the NPDES page; each result opens the plant profile with status, expiry, design flow and the three-year violation count.

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NPDES permits in New Jersey

Name: NPDES permits held by wastewater treatment plants in New Jersey
Creator: Klarifi
License: https://klarifi.io/terms-of-service

122 permits held by publicly owned wastewater treatment plants · issued by NJDEP

Effective

Administratively continued

Expired

Total tracked

122

New Jersey Department of Environmental Protection (NJDEP) runs the NPDES program in New Jersey under delegation from EPA Region 2, issuing and enforcing the discharge permits listed here. Klarifi tracks 122 permits held by publicly owned treatment plants in the state, with status, expiry, design flow and three-year compliance for each. Agency website →

An NPDES permit runs for five years. To keep discharging, a plant must apply for renewal at least 180 days before the expiry date, and the renewed permit usually arrives with tighter effluent limits, new monitoring requirements or a compliance schedule. That is why the year a permit expires is the year a plant starts budgeting for upgrades: nutrient removal, disinfection, capacity or controls.

Permit renewals by year

2026: 20 permits →2027: 33 permits →2028: 10 permits →

2029: 13 permits

2030: 13 permits

2031: 5 permits

Largest permit holders in New Jersey

The 25 largest publicly owned wastewater treatment plants in New Jersey by permitted design flow, with NPDES permit number, status and expiry. Source: EPA ICIS-NPDES via Klarifi.
Facility	City	Avg flow (MGD)	Design (MGD)	NPDES permit	Status	Expires	Violations (3y)
Essex & Union Cnty Joint Meeting STP	Elizabeth	44.93	220	NJ0024741	Effective	Mar 2030	145
Delaware #1 Water Pollution Control Facility	Camden	43.19	185	NJ0026182	Effective	Dec 2029	6
Middlesex County Utilities Authority	Sayreville	77.42	147	NJ0020141	Administratively continued	Jun 2020	17
Bergen County Utilities Authority	Little Ferry	63.2	94	NJ0020028	Effective	Mar 2030	176
Monmouth Cnty Bayshore Outfall Auth Belford Pump Station	Belford	12.8	33	NJ0024694	Effective	Sep 2026	3
Ocean Cnty Util Auth Nwpcf	Bricktown	22.16	32	NJ0028142	Administratively continued	Mar 2026	0
Atlantic County Utilities Authority POTW	Atlantic City	24.52	—	NJL024473	Effective	Dec 2030	0
Somerset Raritian Valley Sewerage	Bridgewater	12.98	23	NJ0024864	Effective	Nov 2030	9
North Hudson Sewerage Auth WWTP	Hoboken	11.5	20.8	NJ0026085	Effective	Mar 2029	0
Trenton City DPW Sewer Auth	Trenton	9.42	20	NJ0020923	Administratively continued	Mar 2026	127
Rahway Valley Sewerage Authority	Rahway	19.3	—	NJL024643	Effective	Dec 2030	77
Ocean Cnty Util Auth Cwpcf	Bayville	17.6	—	NJL029408	Effective	Dec 2030	0
Gloucester Cnty Util Auth STP	West Deptford Twp	15.16	—	NJ0024686	Effective	Dec 2026	15
River Road WWTP	West New York	—	15	NJ0025321	Effective	Mar 2031	98
Wildwood/lower Region Wtf	Rio Grande	—	14.18	NJ0053007	Expired	May 2026	116
Township Of Wayne	Wayne	5.72	13.5	NJ0028002	Administratively continued	Mar 2026	38
Rockaway Valley Reg Sa	Boonton	9.09	12	NJ0022349	Administratively continued	Sep 2024	117
Middletown Twp Slf Belford Section	Middletown	7.01	10.8	NJ0025356	Expired	Dec 2025	4
Pine Brook STP	Manalapan	5.83	8.8	NJ0023728	Effective	Sep 2026	0
Cape May Cnty MUA Ocean City WWTP	Ocean City	2.57	8.24	NJ0035343	Administratively continued	Jun 2026	10
Par Troy Hills Twp MUA WWTP @ Whippany River	Parsippany	7.98	—	NJG124753	Effective	Jan 2028	88
Cape May Cnty MUA 7 Mile Beach Middle Rgnl Wtf	Cape May Court House	2.88	7.67	NJ0052990	Administratively continued	Jun 2026	2
Two Bridges Wastewater Treatment Plant	Lincoln Park	4.45	7.5	NJ0029386	Expired	Sep 2025	0
Bergen County Utilities Authority	Edgewater	3.52	6	NJ0020591	Expired	Apr 2017	151
Ewing Lawrence Sewer Auth	Lawrenceville	5.5	—	NJ0024759	Administratively continued	Sep 2023	96

All 122 plants in New Jersey →

NPDES permits in New Jersey: questions

Sources and methodology

Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.

Data refreshed September 11, 2026.

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